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From "David Jencks (JIRA)" <j...@apache.org>
Subject [jira] Created: (GERONIMO-5423) persistence units in ear's lib need to be global
Date Thu, 01 Jul 2010 23:33:49 GMT
persistence units in ear's lib need to be global
------------------------------------------------

                 Key: GERONIMO-5423
                 URL: https://issues.apache.org/jira/browse/GERONIMO-5423
             Project: Geronimo
          Issue Type: Bug
      Security Level: public (Regular issues)
          Components: deployment, persistence
    Affects Versions: 3.0
            Reporter: David Jencks
            Assignee: David Jencks
             Fix For: 3.0


In EE5 I interpreted this statememt (and possibly others I can't find right now) from e.g.
EE 8.3.1:

Note that the presence of component-declaring annotations in shared artifacts, such as libraries
in the library directory and libraries referenced by more than one module through Class-Path
references, can have unintended and undesirable consequences and is not recommended.

to apply to jpa entities so if there's a jar with persistence.xml in the ear lib directory
we cooked up a persistence unit for each module in the ear.  EE6 lets you put persistence-context-refs
and persistence-unit-refs in the application.xml which obviously have to refer to something
available at the ear level, so my conclusion is that we ought to be deploying persistence
units in an ear lib once for the whole ear.  (well, maybe also once in each app client).

This makes a lot more sense and aligns better with the osgi jpa stuff.

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